Square Feet to Acres
Type square feet (ft²), see acres (ac).
By Akash Yadav Updated 27 September 2026
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The formula
How to convert square feet to acres
To change square feet into acres, divide by 43560.
acres = square feet ÷ 43560
Going the other way: square feet = acres × 43560
1 square foot = 0.00002296 acres. This factor does not end, so results on this page are rounded.
Worked example
You have 10,000 square feet. Divide by 43560. 10,000 ÷ 43560 = 0.2296 ac.
Common values
Square feet to acres conversion table
| Square feet (ft²) | Acres (ac) |
|---|---|
| 500 ft² | 0.0115 ac |
| 1000 ft² | 0.023 ac |
| 2000 ft² | 0.0459 ac |
| 2500 ft² | 0.0574 ac |
| 5000 ft² | 0.1148 ac |
| 7500 ft² | 0.1722 ac |
| 8000 ft² | 0.1837 ac |
| 10,000 ft² | 0.2296 ac |
| 10,890 ft² | 0.25 ac |
| 15,000 ft² | 0.3444 ac |
| 20,000 ft² | 0.4591 ac |
| 21,780 ft² | 0.5 ac |
| 43,560 ft² | 1 ac |
| 100,000 ft² | 2.2957 ac |
| 500,000 ft² | 11.4784 ac |
Before you rely on it
Divide by 43,560
An acre is exactly 43,560 square feet, so dividing by 43,560 is exact. Written as a multiplier, 1/43,560 never ends, so the decimals shown here are rounded to four places — plenty for any lot.
Measure the whole plot, then convert once. A lot 100 ft by 150 ft is 15,000 ft², about 0.34 acres. Converting each side separately does not work, because an acre is an area, not a length.
A typical US house of 2,000 ft² covers under a twentieth of an acre of floor, and less of the lot if it has a second storey. Floor area and lot size are measured differently and are not interchangeable.
This page uses the international acre. Older US land records may use the US survey acre, about 4 parts per million bigger — a difference far below anything a lot survey can measure.
Common questions
Frequently asked questions
How many acres is 10,000 square feet?
10,000 ft² is about 0.2296 acres — a little under a quarter acre.
How many acres is 5,000 square feet?
5,000 ft² is about 0.1148 acres.
How many acres is 20,000 square feet?
20,000 ft² is about 0.4591 acres — a little under half an acre.
How many acres is 1,000 square feet?
1,000 ft² is about 0.023 acres.
How many acres is 100,000 square feet?
100,000 ft² is about 2.296 acres.
How many square feet make an acre?
Exactly 43,560 square feet.
Keep going
Related converters
- Acres to Square Feet ac → ft²
- Square Feet to Square Meters ft² → m²
- Hectares to Acres ha → ac
- All area converters
Every factor on this page is listed in our conversion methodology.